MEDIUM
7th CBSE
IMPORTANT
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Lens which is thinner in the middle and thicker at the edge is _____.
(Choose from the following: concave lens/ convex lens)

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Important Questions on Light

EASY
7th CBSE
IMPORTANT
Exam Guru Science>Chapter 15 - Light>Exercise 15.3>Q I

The centre of the lens is _____.

(Choose from the following: centre of curvature/optical centre)

EASY
7th CBSE
IMPORTANT
Exam Guru Science>Chapter 15 - Light>Exercise 15.3>Q I

Which lens is used as a magnifying glass?

(Choose from the following- Concave lens/ Convex lens)

EASY
7th CBSE
IMPORTANT
Exam Guru Science>Chapter 15 - Light>Exercise 15.3>Q I
The band of seven colours seen in the sky during rain is called as _____.
EASY
7th CBSE
IMPORTANT
Exam Guru Science>Chapter 15 - Light>Exercise 15.3>Q I
A concave lens always produces a virtual, erect and _____ (magnified/diminished) image.
EASY
7th CBSE
IMPORTANT
Exam Guru Science>Chapter 15 - Light>Exercise 15.3>Q I
The distance between the optical centre and the principal focus of a lens is called its _____.
EASY
7th CBSE
IMPORTANT
Exam Guru Science>Chapter 15 - Light>Exercise 15.3>Q I
The splitting of white light into seven colours is called _____ of light.
EASY
7th CBSE
IMPORTANT
Exam Guru Science>Chapter 15 - Light>Exercise 15.3>Q I
A _____ lens always forms an erect, virtual and smaller image than the object.
(Choose from the following: concave/ convex)
EASY
7th CBSE
IMPORTANT
Exam Guru Science>Chapter 15 - Light>Exercise 15.3>Q I
A _____ lens is used in making telescopes.
(Choose from the following: concave/ convex)